[PHP] Making a battle script

liam_d · Mar 1, 2008

Well i have started making a battle script for use in my game but i am really stuck

i have all the values ready to use but i'm not exactly sure how to make the you and them battle?

PHP:

function fight($you, $them)
{
	$get_your_mecha = mysql_query('SELECT * FROM `mecha` WHERE `owner` = "' . (int) $you . '"');
	$your_mecha = mysql_fetch_array($get_your_mecha);
        
	$get_enemy_mecha = mysql_query('SELECT * FROM `mecha` WHERE `owner` = "' . (int) $them . '"');
	$enemy_mecha = mysql_fetch_array($get_your_mecha);
        
        if ($your_mecha['armour'] <= 0)
        {
            echo 'You need to repair your Mecha before you can battle!';
        }
        
        if ($your_mecha['armour'] <= 0)
        {
            echo 'You need to repair your Mecha before you can battle!';
        }
        
        // set your stats here
        $your_weapon = mysql_fetch_array(mysql_query('SELECT * FROM `weapon` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"'));
        $your_armour = mysql_fetch_array(mysql_query('SELECT * FROM `armour` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"'));
        $your_pack = mysql_fetch_array(mysql_query('SELECT * FROM `pack` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"'));
        
        $your['strength'] = $your_mecha['strength'] + $your_weapon['power'];
        $your['armour'] = $your_mecha['armour'] + $your_armour['power'];
        $your['agility'] = $your_mecha['agility'] +  + $your_agility['power'];
        
        // set enemy stats here
        $enemy_weapon = mysql_fetch_array(mysql_query('SELECT * FROM `weapon` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"'));
        $enemy_armour = mysql_fetch_array(mysql_query('SELECT * FROM `armour` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"'));
        $enemy_pack = mysql_fetch_array(mysql_query('SELECT * FROM `pack` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"'));
        
	$enemy['strength'] = $enemy_mecha['strength'] + $enemy_weapon['power'];
	$enemy['armour'] = $enemy_mecha['armour'] + $enemy_armour['power'];
	$enemy['agility'] = $enemy_mecha['agility'] +  + $enemy_agility['power'];
		
	// fighting
	/* determine who is first by who has better agility */
	if ($your['agility'] > $enemy['agility'])
	{
		
	}
		
	else
	{
	}
        

	// if both alive fight again
}

JFS · Mar 2, 2008

here are some thoughts:

Hit chance:

$your['hitchance'] = $your_mecha['agility'] / ( $your['agility'] - $enemy_mecha['agility'] )
$enemy['hitchance']= $enemy_mecha['agility'] / ( $enemy['agility'] - $your_mecha['agility'] )

Combat damage:

$your['maxdamage'] = $your_mecha['strength'] + $your_weapon['power'] - $enemy_mecha['armour']
$your['mindamage'] = $your_mecha['strength'] + $your_weapon['power'] - $enemy_mecha['armour'] + $enemy_armour['power']

( the same for the enemy )

liam_d · Mar 2, 2008

Thanks for the input, here is what i have now, think all that is left is to actually do the battle, to which i am unsure about how to do?

PHP:

<?php

function fight($you, $them)

{

	$get_your_mecha = mysql_query('SELECT * FROM `mecha` WHERE `owner` = "' . (int) $you . '"');

	$your_mecha = mysql_fetch_array($get_your_mecha);

        

	$get_enemy_mecha = mysql_query('SELECT * FROM `mecha` WHERE `owner` = "' . (int) $them . '"');

	$enemy_mecha = mysql_fetch_array($get_your_mecha);

        

	if ($your_mecha['armour'] <= 0)

	{

		echo 'You need to repair your Mecha before you can battle!';

	}

        

	if ($your_mecha['armour'] <= 0)

	{

		echo 'You need to repair your Mecha before you can battle!';

	}

        

	// set your stats here

	$your_weapon = mysql_fetch_array(mysql_query('SELECT * FROM `weapon` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"'));

	$your_armour = mysql_fetch_array(mysql_query('SELECT * FROM `armour` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"'));

	$your_pack = mysql_fetch_array(mysql_query('SELECT * FROM `pack` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"'));

        

	$your['strength'] = $your_mecha['strength'] + $your_weapon['power'];

	$your['armour'] = $your_mecha['armour'] + $your_armour['power'];

	$your['agility'] = $your_mecha['agility'] +  + $your_agility['power'];

        

	// set enemy stats here

	$enemy_weapon = mysql_fetch_array(mysql_query('SELECT * FROM `weapon` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"'));

	$enemy_armour = mysql_fetch_array(mysql_query('SELECT * FROM `armour` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"'));

	$enemy_pack = mysql_fetch_array(mysql_query('SELECT * FROM `pack` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"'));

        

	$enemy['strength'] = $enemy_mecha['strength'] + $enemy_weapon['power'];

	$enemy['armour'] = $enemy_mecha['armour'] + $enemy_armour['power'];

	$enemy['agility'] = $enemy_mecha['agility'] +  + $enemy_agility['power'];



	// chance of hitting first



	$your['hitchance'] = $your_mecha['agility'] / ( $your['agility'] - $enemy_mecha['agility'] );

	$enemy['hitchance'] = $enemy_mecha['agility'] / ( $enemy['agility'] - $your_mecha['agility'] );

	

	//Combat damage:

	

	$your['maxdamage'] = $your_mecha['strength'] + $your_weapon['power'] - $enemy_mecha['armour'];

	$your['mindamage'] = $your_mecha['strength'] + $your_weapon['power'] - $enemy_mecha['armour'] + $enemy_armour['power'];

	//Combat damage:

	

	$enemy['maxdamage'] = $your_mecha['strength'] + $your_weapon['power'] - $enemy_mecha['armour'];

	$enemy['mindamage'] = $enemy_mecha['strength'] + $enemy_weapon['power'] - $your_mecha['armour'] + $your_armour['power'];

	

	// if your go first

	if ($your['hitchance'] > $enemy['hitchance'])

	{

	}

	

	// if enemy go first

	else

	{

	}

}

?>

liam_d · Mar 5, 2008

friendly bump, any ideas?

aween · Mar 14, 2008

This is how i would do it :
This is not tested- just written to give you a idea

PHP:

<?php
function fight($you, $them) { 

$get_your_mecha = mysql_query('
SELECT 
user.id,user.strength,user.armour,user.agility, 
weapon.power as weapon_power, 
armour.power as armour_power, 
agility.power as agility_power

FROM mecha as user
LEFT JOIN weapon
ON weapon.mecha_owner = $you
AND
LEFT JOIN armour
ON armour.mecha_owner = $you
AND
LEFT JOIN pack
ON pack.mecha_owner = $you

WHERE user.owner = "' . (int) $you . '"'); 
$you = mysql_fetch_array($get_your_mecha); 

$get_enemy_mecha = mysql_query('
SELECT 
user.id,user.strength,user.armour,user.agility, 
weapon.power as weapon_power, 
armour.power as armour_power, 
agility.power as agility_power

FROM mecha as user
LEFT JOIN weapon
ON weapon.mecha_owner = $them
AND
LEFT JOIN armour
ON armor.mecha_owner = $them
AND
LEFT JOIN pack
ON pack.mecha_owner = $them

WHERE user.owner = "' . (int) $them . '"'); 
); 
$enemy = mysql_fetch_array($get_enemy_mecha); 

if ($you['armour_power'] <= 0)  {
echo 'You need to repair your Mecha before you can battle!'; 
}
    /*$your_weapon = mysql_fetch_array(mysql_query('SELECT * FROM `weapon` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"')); 
    $your_armour = mysql_fetch_array(mysql_query('SELECT * FROM `armour` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"')); 
    $your_pack = mysql_fetch_array(mysql_query('SELECT * FROM `pack` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"')); 
	*/
         

    $you['strength'] = $you['strength'] + $you['weapon_power']; 
    $you['armour'] = $you['armour'] + $you['armour_power']; 
    $you['agility'] = $you['agility'] + $you['agility_power']; 
    // set enemy stats here 
	/*
	$your['strength'] = $your_mecha['strength'] + $your_weapon['power']; 

    $your['armour'] = $your_mecha['armour'] + $your_armour['power']; 

    $your['agility'] = $your_mecha['agility'] +  + $your_agility['power']; 
	

    $enemy_weapon = mysql_fetch_array(mysql_query('SELECT * FROM `weapon` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"')); 
    $enemy_armour = mysql_fetch_array(mysql_query('SELECT * FROM `armour` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"')); 
    $enemy_pack = mysql_fetch_array(mysql_query('SELECT * FROM `pack` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"')); 
    $enemy['strength'] = $enemy_mecha['strength'] + $enemy_weapon['power']; 
    $enemy['armour'] = $enemy_mecha['armour'] + $enemy_armour['power']; 
    $enemy['agility'] = $enemy_mecha['agility'] +  + $enemy_agility['power']; 
*/
	
	$enemy['strength'] = $enemy['strength'] + $enemy['weapon_power']; 
    $enemy['armour'] = $enemy['armour'] + $enemy['armour_power']; 
    $enemy['agility'] = $enemy['agility'] + $enemy['agility_power']; 


    $your['hitchance'] = $you['agility'] / ( $you['agility'] - $enemy['agility'] ); 
    $enemy['hitchance'] = $enemy['agility'] / ( $enemy['agility'] - $you['agility'] ); 
   
    $your['maxdamage'] = $you['strength'] + $you['weapon_power'] - $enemy['armour_power']; 
    $your['mindamage'] = $you['strength'] + $you['weapon_power'] - $enemy['armour_power'] + $enemy['armour_power']; 

    //Combat damage: 
    $enemy['maxdamage'] = $you['strength'] + $your['weapon_power'] - $enemy['weapon_armour']; 
    $enemy['mindamage'] = $enemy['strength'] + $enemy['weapon_power'] - $you['armour'] + $your['weapon_power']; 

    // if your go first 

    if ($your['hitchance'] > $enemy['hitchance']) { 
	} else { 

    } 

} 
?>

liam_d · Mar 14, 2008

Thanks for the post this will help quite a lot i think and will definitely make it faster since using less queries

.

What i need now is to do the actual battle, which i have no idea how to do properly

Thanks!

aween · Mar 14, 2008

basically - you can do like the above - you have to add certain health (which is i guess armour) to be deducted from the total amount untill one of them drops to zero
might be handy if they can choose what attack - since i assume every attack has their own strength?

jessemiller · Mar 19, 2008

I wrote this up in this post when i saw your post, so i definately didnt test it, but its a very good start to the direction your heading in

Code:

<?
session_start();

// lets tell the script that if the user is not logged in they cannot access
// the game, when the user is logging in, some variable should be
// set that they are logged in, a basic easy one is
// $_SESSION['loggedin']=1;
// and when they logout destroy the session, google is your friend.

if($_SESSION['loggedin']==0) { header("Location: login.php");exit; }

$userid=$_SESSION['userid']; //assuming you have sessions set
$id=$_GET['userid']; // assuming the url uses a GET function

$z=mysql_query("SELECT * FROM users WHERE userid='$userid'");
$x=mysql_fetch_array($z);

// Protect the admin, you.

if($_GET['userid'] == '1') {
print "You cannot attack the admin, i am all powerful"; die;
}

// Lets make sure they are not attacking themselves

if($_GET['userid'] == '$userid') {
print "You cannot attack yourself"; die;
}

if(isset($_GET['userid'])) {
$q=mysql_query("SELECT * FROM users WHERE userid='$id'");
$r=mysql_fetch_array($q);

// Set some variables

$offender=$x['name'];
$defender=$r['name'];
$offhealth=$x['health'];
$defhealth=$r['health'];
$offstat1=$x['stat1'];
$defstat1=$r['stat1'];
$offstat2=$x['stat2'];
$defstat2=$r['stat2'];

// Lets make sure the user isn't trying to kill a dead user
// Or trying to kill people even though they are dead

if($offhealth<1) {
print "You are dead, you cannot attack while dead, jerk."; die;
}

if($defhealth<1) {
print "This Player Is Dead"; die;
}

// Set a random factor so the most powerful is not always the winner

$offrand=rand(0,100);
$defrand=rand(0,100);
$rand=rand(100,999);

// Do some math

$offpower=($offstat1+$offstat2+$offrand);
$defpower=($defstat1+$defstat2+$defrand);

$offdamage=($defpower-$defrand/*3);
$defdamage=($offpower-$offrand/*3);

// This is where you let the user know what is going on
// Send them to a link
// attack.php?userid=$id&math=$rand
// Print the names and health of each user

if($offpower>$defpower){

// print the action that took place, defense lost health

mysql_query("UPDATE users SET health=health-'$defdamamge' WHERE userid='$id'"); }

if($offpower<$defpower){

// print the action that took place, offense lost health

mysql_query("UPDATE users SET health=health-'$offdamamge' WHERE userid='$userid'"); }

// when a player reaches 1 health or lower it will state the player is dead
// this script will need editing if stats are involved
// but this is a good start to get you on your way
}
?>

I hope this helps you bud.

liam_d · Apr 6, 2008

JFS said:
here are some thoughts:

Hit chance:

$your['hitchance'] = $your_mecha['agility'] / ( $your['agility'] - $enemy_mecha['agility'] )
$enemy['hitchance']= $enemy_mecha['agility'] / ( $enemy['agility'] - $your_mecha['agility'] )

Combat damage:

$your['maxdamage'] = $your_mecha['strength'] + $your_weapon['power'] - $enemy_mecha['armour']
$your['mindamage'] = $your_mecha['strength'] + $your_weapon['power'] - $enemy_mecha['armour'] + $enemy_armour['power']

( the same for the enemy )

Just a question about the hitchance here, why is the hitchance for myself for example be my agility divided by my agility take the enemys agility?
Is that the best way?

liam_d · Apr 7, 2008

Okay i have gotten it working for all but one thing, the attack_back function and the hitchance dont seem to work properly, for one thing i seem to always attack first even if the enemy hitchance is bigger and i always attack_back not the enemy?

PHP:

<?php
class attacking
{
	var $your;
	var $enemy;
	var $your_mecha;
	var $enemy_mecha;
	
	function fight($you, $them)
	{
		$get_your_mecha = mysql_query('SELECT * FROM `mecha` WHERE `owner` = "' . (int) $you . '"');
		$this->your_mecha = mysql_fetch_array($get_your_mecha);
			
		$get_enemy_mecha = mysql_query('SELECT * FROM `mecha` WHERE `owner` = "' . (int) $them . '"');
		$this->enemy_mecha = mysql_fetch_array($get_enemy_mecha);
		
		if ($this->your_mecha['armour'] <= 0)
		{
			echo 'You need to repair your Mecha before you can battle!';
		}
			
		else if ($this->enemy_mecha['armour'] <= 0)
		{
			echo 'The enemy has already been disabled!!';
		}
		
		else
		{
			
			// set your stats here
			$your_weapon = mysql_fetch_array(mysql_query('SELECT * FROM `weapon` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"'));
			$your_armour = mysql_fetch_array(mysql_query('SELECT * FROM `armour` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"'));
			$your_pack = mysql_fetch_array(mysql_query('SELECT * FROM `pack` WHERE `mecha_owner` = "' . $your_mecha['id'] . '"'));
				
			$this->your['strength'] = $this->your_mecha['strength'] + $your_weapon['power'];
			$this->your['armour'] = $this->your_mecha['armour'] + $your_armour['power'];
			$this->your['agility'] = $this->your_mecha['agility'] +  + $your_agility['power'];
				
			// set enemy stats here
			$enemy_weapon = mysql_fetch_array(mysql_query('SELECT * FROM `weapon` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"'));
			$enemy_armour = mysql_fetch_array(mysql_query('SELECT * FROM `armour` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"'));
			$enemy_pack = mysql_fetch_array(mysql_query('SELECT * FROM `pack` WHERE `mecha_owner` = "' . $enemy_mecha['id'] . '"'));
				
			$this->enemy['strength'] = $this->enemy_mecha['strength'] + $enemy_weapon['power'];
			$this->enemy['armour'] = $this->enemy_mecha['armour'] + $enemy_armour['power'];
			$this->enemy['agility'] = $this->enemy_mecha['agility'] +  + $enemy_agility['power'];
		
			// chance of hitting first
		
			$this->your['hitchance'] = $this->your_mecha['agility'] - $this->enemy_mecha['agility'];
			$this->enemy['hitchance'] = $this->enemy_mecha['agility'] - $this->your_mecha['agility'];
			
			//Combat damage:
			
			$this->your['maxdamage'] = $this->your_mecha['strength'] + $your_weapon['power'];
			$this->your['mindamage'] = $this->your_mecha['strength'] + $your_weapon['power'] / 3;
		
			//Combat damage:
			
			$this->enemy['maxdamage'] = $this->enemy_mecha['strength'] + $enemy_weapon['power'];
			$this->enemy['mindamage'] = $this->enemy_mecha['strength'] + $enemy_weapon['power'] / 3;
			
			// if your go first
			if ($this->your['hitchance'] > $this->enemy['hitchance'])
			{
				$this->attack(1);
			}
			
			// if enemy go first
			else
			{
				$this->attack(2);
			}
		}
	}
	
	// for first attack
	function attack ($first)
	{
		if ($first = 1)
		{
			// Get power of attack as a random number between min and max damage you can cause
			$power = rand($this->your['mindamage'], $this->your['maxdamage']);
			
			// take that power away from enemy armour
			$this->enemy['armour'] = $this->enemy['armour'] - $power;
			
			echo "You attack the enemy and cause {$power} damage. Enemy armour is now at {$this->enemy['armour']}<br />";
			
			if ($this->enemy['armour'] <= 0)
			{
				mysql_query("UPDATE `mecha` SET `armour` = '0' WHERE `id` = '{$this->enemy_mecha['id']}'");
				echo 'You have disabled the enemy, you have won the battle!<br />';
			}
				
			else
			{
				$this->attack_back(2);
			}
		}
		
		else if ($first = 2)
		{
			// Get power of attack as a random number between min and max damage you can cause
			$power = rand($this->enemy['mindamage'], $this->enemy['maxdamage']);
			
			// take that power away from enemy armour
			$this->your['armour'] = $this->your['armour'] - $power;
			
			echo "The enemy attacks and causes {$power} damage. Your armour is now at {$this->your['armour']}<br />";
			
			if ($this->your['armour'] <= 0)
			{
				mysql_query("UPDATE `mecha` SET `armour` = '0' WHERE `id` = '{$this->your_mecha['id']}'");
				echo 'You have disabled the enemy, you have won the battle!<br />';
			}
				
			else
			{
				$this->attack_back(1);
			}
		}
	}
	
	// for all other attacking
	function attack_back ($who)
	{
		if ($who = 1)
		{
			// Get power of attack as a random number between min and max damage you can cause
			$power = rand($this->your['mindamage'], $this->your['maxdamage']);
			
			// take that power away from enemy armour
			$this->enemy['armour'] = $this->enemy['armour'] - $power;
			
			echo "You attack the enemy again and cause {$power} damage. Enemy armour is now at {$this->enemy['armour']}<br />";
			
			if ($this->enemy['armour'] <= 0)
			{
				mysql_query("UPDATE `mecha` SET `armour` = '0' WHERE `id` = '{$this->enemy_mecha['id']}'");
				echo 'You have disabled the enemy, you have won the battle!<br />';
			}
				
			else
			{
				$this->attack_back(2);
			}
		}
		
		else if ($who = 2)
		{
			// Get power of attack as a random number between min and max damage you can cause
			$power = rand($this->enemy['mindamage'], $this->enemy['maxdamage']);
			
			// take that power away from enemy armour
			$this->your['armour'] = $this->your['armour'] - $power;
			
			echo "The enemy attacks again and causes {$power} damage. Your armour is now at {$this->your['armour']}<br />";
			
			if ($this->your['armour'] <= 0)
			{
				mysql_query("UPDATE `mecha` SET `armour` = '0' WHERE `id` = '{$this->your_mecha['id']}'");
				echo 'You have disabled the enemy, you have won the battle!<br />';
			}
				
			else
			{
				$this->attack_back(1);
			}
		}
	}
}
?>

[PHP] Making a battle script

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